By parity of reasoning a blood ritual may have been adopted by peoples who practise the expulsion of evils, conceiving them either animistically or as powers; catharsis, in the sense of removal of uncleanness, is not necessarily primitive.
The aim of logic in general is to find the laws of all inference, which, so far as it obeys those laws, is always consistent, but is true or false according to its data as well as its consistency; and the aim of the special logic of knowledge is to find the laws of direct and indirect inferences from sense, because as sense produces sensory judgments which are always true of the sensible things actually perceived, inference from sense produces inferential judgments which, so far as they are consequent on sensory judgments, are always true of things similar to sensible things, by the very consistency of inference, or, as we say, by parity of reasoning.
The Union of Horodlo also established absolute parity between the nobility of Poland and Lithuania, but the privileges of the latter were made conditional upon their profession of the Roman Catholic faith, experience having shown that difference of religion in Lithuania meant difference of politics, and a tendency Moscow-wards, the majority of the Lithuanian boyars being of the Greek Orthodox Confession.
In doing so they carried out with great exactitude the principle of dualism, establishing in form a complete parity between Hungary on one side and the other territories of the king on the other.
In 1572 a formal manifesto was published, entitled an Admonition to Parliament, the leading ideas in which were: parity of ministers, appointment of elders and deacons; election of ministers by the congregation; objection to prescribed prayer and antiphonal chanting; preaching, the chief duty of a minister; and the power of the magistrates to root out superstition and idolatry.
The suspension of cash payment by the Austro-Hungarian Bank was continued, but the bank was bound to provide, by every means at its disposal, that the value of its notes as quoted on foreign bourses should be permanently secured in proportion to the parity of the legal mint standard of the krone currency.
In this irreversible catena proceeding from ground to consequent, we have left far behind such things as the formal parity of genus and differentia considered as falling under the same predicable, 3 and hence justified in part Porphyry's divergence from the scheme of predicables.